This paper presents an alternative way to produce flattopped RF pulses at the pulse compressor output. Flattopped RF pulses are suitable for multi-bunch operation where it is often required that beams experience the same accelerating gradient. Moreover, the energy gain, in this case, is less sensitive to timing jitters. The proposed approach is based on Iterative Learning Control technique, whi...

BACKGROUND U.S. natural gas production increased 40% from 2000 to 2015. This growth is largely related to technological advances in horizontal drilling and high-volume hydraulic fracturing. Environmental exposures upon impacted communities are a significant public health concern. Noise associated with natural gas compressor stations has been identified as a major concern for nearby residents, t...

Smooth plant production is utmost expected by owners since any unplanned shutdown very much undesirable as it may incur loss of company’s profits and other repercussions. Critical operational assets such rotating machineries their components, e.g., motor, pump, compressor, turbines are crucial to be monitored in ensuring continuous operation the plant. Therefore, vibration being one elements pr...

In order to achieve the fast load following and safe transient operation of Solid Oxide Fuel Cell-Gas Turbine hybrid system, a novel control approach by combining multi loops with coordinated protection is proposed in this work. The can adjust behavior parameters on-line avoid undesired faults, such as compressor surge, reformer carbon deposition, fuel cell thermal crack turbine blade overheat....

The center frequency of the narrow-band THz wave is always unstable with the optical rectification methods. Therefore, the high-phase stable time-delay generator Etalon and the parallel grating pair compressor with the self-adaptive optical path compensation function are designed according to the principle that two lasers in different paths will result in specific relative time delay; with LiNb...

The performance prediction of axial flow compressors at different speeds and under various pressure ratio conditions are still being developed because of costly empirical experiments. One-dimensional modeling is a simple, fast and accurate method for performance prediction in any type of compressor with different geometries. In this approach, inlet flow conditions and compressor geometry are kn...

In the era of coal power station phase-out, natural gas fired combined cycle will drive energy transition towards sustainable generation. a panorama strong requirement for grid flexibility and non-dispatchable renewable penetration, survival thermal plant is strictly linked with operating successfully in compensating fluctuating production through flexible The Italian case taken as reference, c...

For many years the authors have been investigating the use of twin screw machines to fulfil both the expansion and compression. One of potential advantages of screw machines over other types of positive displacement machine is their ability to perform both the compression and expansion functions simultaneously, using only one pair of rotors. A further feature is the use of the rotors which seal...

The purpose of the publication is to develop a methodology for presenting unit "6 kV compressor-synchronous electric motor" in form finite state machine.
 It hypothesized that behavior compressor can be associated with an abstract deterministic theory machines and graphs applied analyze operation installation using example large-tonnage shop production ammonia. shown allows combining all p...

Evaporative cooling is a promising concept to reduce the fuel cell system volume and mass significantly. This paper investigates interactions between stack balance of plant in an evaporatively cooled polymer electrolyte (PEFCS). For this, zero-dimensional PEFCS model, comprising stack, air compressor, charge cooler, humidifier, hydrogen recirculation blower, condensing radiator water separator ...